XBMC 9.11 Camelot update - New look, awesome features!
XBMC was originally developed for the 1st gen Xbox because it was so easy to hack, and mod. It allows a varyity of devices and platforms to access stuff like music, video, pictures and heaps of online content, through the XBMC interface. It runs on Windows, Mac, Linux, Apple TV and is completely open source.
The latest update includes -- Better support for multiple monitors, a speed up RAW image loading, able to handle more file extensions, performance improvements to SQLite (database) queries, the ability to scrape and scan TV Shows into the video library by air-date via TheTVDB.com -- and much much more.
Read -- Complete changelog
Download - For Mac, Linux, Windows, Apple TV and Portable.